کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
563996 | 875555 | 2013 | 14 صفحه PDF | دانلود رایگان |

This paper addresses the problem of detecting the presence of data hidden in digital media by the Least Significant Bit (LSB) matching scheme. In a theoretical context of known digital medium parameters, two important results are presented. First, the use of hypothesis testing theory allows the design of the Most Powerful (MP) test. Second, a study of the MP test provides the opportunity to analytically calculate its statistical properties in order to warrant a given probability of false-alarm. In practice when detecting LSB matching, the unknown medium parameters have to be estimated. Based on a local model of medium content, two different estimations which lead to two different tests are present. A numerical comparison with state-of-the-art detectors shows the good performance of the proposed tests and highlights the relevance of the proposed methodology.
► Steganalysis is addressed using hypothesis testing theory.
► The statistical performance of the proposed test is analytically calculated.
► The proposed test permits the guaranteeing of a false-alarm probability.
► This provides an upper bound on the detection performance of any detector.
► Using general statistical concept it can be applied for a wide range of media.
Journal: Signal Processing - Volume 93, Issue 7, July 2013, Pages 1724–1737